After you apply the Exchange Server Administrator program Exchange Server 5.5 post-Service Pack 3 fix that is described in the following Knowledge Base article
254805 XADM: Exchange Server 5.5 Post-SP3 Administrator Program Fixes Available
Exchange Server may generate the following event message:
ID: 2037
Type: Error
Source: MSExchangeSA
Description: The file version of \address\proxy_address_type\processor\proxy.dll installed on the local server is not current. Unable to locate a correct version on any server in the site.
The following informational event 2036 message may also be logged:
The file version of c:\exchsrvr\address\address\proxy_address_type\processor\proxy.dll looking at servers in site for a current version.
The following error message may also be displayed:
An error occurred while processing an e-mail address.
The error message also references the following ID:
ID no: C1030b35